Heat-radiator for stoves



W. E. RENNOLDS.

Heat Radiator for Stoves.

N0. 46,'941.- Patented-March 21, 1-865.

UNITED STATES PATENT OFFICE...

WILLIAM E. RENNOLDS, OF CHICAGO, ILLINOIS.

HEAT-RADIATOR FOR STOVES.

Specification forming part of Letters Patent No. 46,94 l, dated March21, 1865.

To aZZ whom it may concern:

Be it known that I, WILLIAM E. BENNoLDs, of Chicago, in the county ofCook and State of Illinois, have im'ented a new and ImprovedHeat-Radiator for Stoves 3 and I do hereby declare that the following isa full, clear, and exact description thereof, which will enable thoseskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in whichtion, taken in the liner :0, Fig. 4; Fig. 2, an external view of thesame; Fig. 3, a vertical section of the same, taken in the line y y,Fig; 4; Fig. 4, a plan or top view ofthe same; Fig. 5, an under view orinverted plan of the same.

Similar letters of reference indicate like parts.

This invention relates to a new and improved heat-radiator orair-heating drum to be applied to stoves, as hereinafter fully shown anddescribed, whereby cold air is admitted into the drum, heated, anddiffused into the apartment in which the stove is placed; or the heatedair may be conveyed by pipes into other compartments of the building.

A represents a drum, which may be constructed of sheet metal, and of anysuitable dimensions. This drum has two vertical tubes, to a, placed orformed in it, one of which, a, extends a short distance from the bottomb of the drum to its upper end. The other, a, extends from the bottom tothe upper end. The upper partof the tube a is contracted in width nearits upper end, as shown at c in Fig. 1, so as to leave a space, 01,around it to admit of a communieation between the passages ef, formed bythe tubes at a, and the space 9 under the tube aforms a communicationbetween the passagefand another passage, h, which is between the tube aand the side of the drum. (See Fig. 3.) The tubes a a, it will be seen,extend the whole width of the drum, with the exception of the contractedupper part of a, and the upper part of the passage h communieates withthe flue or chimney. The lower parts of the tubes (4 a are perforated attheir sides, as shown at i, to admit the air to be heated, and the upperends of both tubes to a I are open to admit of the escape of the heatedFigure 1 is a Vertical section of my invenair into the room orapartment. The drum is placed on the top of the stove, and the lower endof the passage 0 is placed over an opening in the top of the stove, sothat the products of combustion from the stove may pass through thepassages e f h, and into the flue or chimney, as indicated by the redarrows in Fig. 3, and the cold air which enters the lower parts of thetubes to a and passes up through them issues in a heated state fromtheir upper ends, as indicated by the black arrows.

Thus by this simple arrangement a very economical and eflicientair-heater is obtained, one that may be economically constructed andapplied to any of the ordinary stoves in use.

I claim as new and desire to secure by Letters Patent- An air-heatingdrum or radiator formed or composed of tubes a. a, arranged within acylinder or drum so as to form flues or draftpassages e f it around thetubes, the latter be ing perforated at their lower ends for theadmission of cold air, and open at their upper ends for the escape ofthe heated air, substantially as shown and described.

WILLIAM E. RENNOLDS.

\Vitnesses:

HENRY BROOKES, J NO. NUTT.

